Corn razor



Jan. 8, 1929.

1,698,045 I M. B. BEHRMAN CORN RAZOR Original Filed Jan. 5, 1925 Patented Jan. 8, 1929.

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Fries.

ivrAnous B. BEHRMAN, or BROOKLYN, NEW YORK, AssIGNon TO THE LOX SEAL eon- PORATION, on BROOKLYN, NEW YQRK, A CORPORATION OENEW YORK.

CORN "RAZOR.

Application filed. January 3, 1925, Serial No. 302. Renewed May 17, 1928.

cutting instrument and more particularly to' such an association of a blade and a holder whereby the blade can be held in a position in which it presents a curved cutting edge to the surface in connection with which it is to be employed, and more particularly a concavely curved cutting edge, and coordinately'involves an arrangement whereby the blade can be readily inserted and removed for replacement or repair.

Considered broadly from one aspect, my invention involves the provision of a holder arranged to support a blade in curved condition, and more particularly of a holder having a curved channel within which a blade is to be positioned and still more particularly the provision with such holder of a flexible blade which is adapted to be flexed so as to have it conform in curvature to the curvature of such channel to permit of its, association therewith and insertion therein. My invention further involves an arrangement whereby the blade can be flexed to such predetermined curvature by having one end thereof anchored in the curved channel, which will permit of the curving of the remaining parts of the blade to conform to thecurvature of the channel and while thus flexed the blade can be effectively worked into the channel.

From another aspect, my invention involves an association of a holder and a blade whereby part of the holder forms a fulcrum for one end of the blade, the blade then being moved about said fulcrum into the desired association with the holder.

My invention further involves the provision of a holder and a blade with spaced apart elements on the holder to engage with opposite ends of the blade and more particularly an arrangement wherein one of said spaced port-ions is in the form of a recess in which the end of the blade is received, and coordinately involves the provision whereby the flexing of the blade to make it conform to the holder is a factor in holding the blade against accidental movement.

My invention further involves the provision of an arrangement whereby the holder and a blade are provided with interengaging elements which predetermine the desired association of the two and coordinately a provision to prevent the accidental movement of the blade from its predetermined position,

and finally my invention involves the provi-.

sion of a simple and inexpensive construction ofthe character set forth, capable of use with a naximum of efficiency and a minimum of cos While I have herein referred to my invention as being for a corn razor and have illustrated in the drawings a specific embodiment of my invention, it will be understood that such embodiment is merely illustrative, ex.- cept to the extent that the specific construction is set forth in the claims and that the reference to my invention as being a corn razor is as to certain phases thereof only for purposes of convenience as features thereof are capable of a much wider field of utility, as, for instance, removing callouses or other undesirable excrescences or protuberances.

For theattainment Of these, objects and such other objects as may hereinafter appear or be pointed out,I have illustrated embodiments of my invention in the drawings wherein: p I j Figure 1 is atop plan view of one'embodiment of my invention; 1 i

Figure 2 is a side elevational view thereof; Figure 3 is a view similar to Figure 2 broken away on the line 33 of Figure 1;

Figure 4; is a sectional view taken on line 440f Figure 1;; i

v Figure 5 is a perspective view of the partly finished blank from which the blade holder is formed Figure 6 is a perspective view intended to illustrate the method of inserting and remov- I ing the blade; a

Figure 7 is a top plan view of another embodiment of my invention;

Figure 8 is a side elevationalview of the embodiment of Figurel and Figure 9 is a section taken on line 9-9 of Figure 7 r On viewing the drawings, it will be observed that the illustrated embodiments are made up generally of two elements, namely the handle member 10 and the bladeholder 11 and that the latter is provided with a channel which is generally curved longitudinally thereof so that the blade received in said channel must necessarily be curved correspondingly thereto. p

I will now describe my preferred manner of forming the holderll of the embodiment of Figures 1 to 6 inclusive.

In Figure 5, I show a partly completed blank from which the holder 11 is formed and this blank is preferablymade of any desired or preferred material such as brass and of a sufiicient thicknesst-o give the holder a substantial rigidity. The blank of Figure 3-has along one side of the base member 12, the upstanding wall13 which is substantially of a height corresponding to the thickness of the blade to be used and both ends of the wall 13 are provided with'the upstanding I 18 at each end thereof.

base 12 of the blank is provided with a lobe or car 21 having its side wall 22 inclined inwardly toward that end provided with the lug 19. This lobeor extension 21 is'provided with a slot 23inclined toward the narrow end of the base 12 and preferably substantially parallel to the side wall 22 thereof, one wall shown at 24 in Figure 4. a V

' The holder 11 is formed from this blank by ofthe slot 23 being inclined or undercut as bending the flanges 14, 1'5 and 19 down upon the upper surface of the base 12 of the blank theflanges 14 and 15 being spaced from this surface just a sufficient distance toadmit of the insertion of the blade into said space.

Upon viewing F igures 1 and 6, it will be observed that by this arrangement I have constructed a holder whichis provided at one :end with a recess formed. between the lugs or flanges 15, 19 and 20, with an abutmentwall 13, and the overhanging wall members 14 and 15, as a result of which there is formed what is in effect a channel between the base 12 and the flanges 14 and 15 open laterally to admit of the insertion andremoval of the blade. The base is curved slightly intermediate its ends so as to give thereto the longitudinal curvature'as'shownin Figures 2 and 3 and there is, therefore, formed between the base of the holder and the various flan 'es and lugs above described a channel which has the longitudinal curvature which the holder itself has and which it isrdesired to give to the blade.

I preferably employ blade ofthe flexible wafer type and which in its normal position is flat as shown in Figure 6 of the drawings and in order to permit of the ready associa-i tion of a blade of thisfiat type with the curved channel thus formed in the holder 11, I provide the arrangement above set forth.

The blank from which the holder 11 is formed is provided with the extension 25 which serves to aflix the blade holder 11 to the handle -10and the holder is provided along that side on which the upstanding wall 13 is formed and adjacent the wall 13 with the cut out or notch 25. The opposite side: of the blank first widens out to'form the lobe 21 and then tapers oppositely along the edge 22 first gradually and then more perceptibly and at the point 26'merges into the tapered edge 27.

'Upon viewing Figures 2 and 6 of thedraw ings, it will be observed that the channel within which the blade is to be received is closed at one end by the downturned flange 19 and that the upstanding flange 20 forms aside abutment wall for one end ofthe blade'andin this way there is formed between the flanges 15, r

19 and 20 what is virtually a recess 33 open to-' ,upon viewing Figure 6 it will be observed that the blade is generally a triangular shaped one and preferably conforms in the general way to the shape of that portion of the base 12 between the wall 13 and the slot 23. The blade is provided on one side with the un sharpened edge 31 which forms the back thereof and on the. other side with the cutting edge 32 which extends longitudinally of the blade and angularly relative to the back edge 31 and is provided at itsinner end with the extension 34,0116 edge of which is a continuation of the unsharpened edge 31 and the other edge of which is preferably substantially parallel thereto and the width of this extension is purposely made substantially equal to or slightly less than the width of the cutaway portion 16 of the flange 14 and equal or less'than the distance between the walls 17 and 18 which define this recess 16.

The pointed or outermost end 35 of the blade is made of a width so as to. be received within the recess 33 above referred to and to permit of its ready insertion into said recess and its retention therein with, the blade in its normal unflexed flat condition as shown in Figure 6,1 have made the recess portion 33 of the channelrelativelyflat so that'theouter or narrowest end of the blade 40 can be inserted therein by a straight in and out movement and this condition of the blade is illus" trated in dotted lines in Figure 2 of the draw- 1 ings and in full lines in Figure 6 of the drawings. With the blade in this uncurved and unflexed condition and position and extend ing angularly from its normal position fully in the channel as shownat Figure 1, the end 34 of the'blade 13 is grasped and forced downwardly so as to flex the blade'until its end is substantially in the plane of the chanme p nel forn'ied between theupper face of the base of the blade will necessarily correspond to the I curvature of the channel and of the upper face of the base 12 and upon an inward movement of this end 34 of the blade 40, that is a movement toward the wall 13 of the holder the blade will move into the position as shown in Figure 1 of the drawings.

For the purpose of predetermining the position of the blade, that is the position in which the blade should be for a proper cutting action and for holding it in its predetermined position, I make use or". the recess 16 and of the extension 34 which I have already explained is of substantially the same width as the recess. As the blade is moved from its initial position in Figure 6 to its predetermined position in Figure 1 as already described, the blade is flexed longitudinally and the normal tendency of the blade will be to straighten out to its flat condition and this tendency of the blade to straighten out will cause the end or extension 34 to move into the recess 16 and to be received between the walls I 17 and 18 so that any movement of the blade ure 6, from which position the blade can be fully withdrawn by an outward pull.

By providing for the removal of the blade from its position of Figure 6 by an outward pull, I have prevented the blade springing from out of the holder when the blade is moved to this position.- The recess 33 thus serves not only as a fulcrum within which the blade end 35 turns as it is moved into and out ot' the channel and the angular position of the recess with reference to the channel is such that the plane of the recess will be of a character to hold the blade in'the plane indicated in dotted lines in Figure 2.

Upon viewing Figure 1 of the drawlngs, it will be observed that an open spacers provided between the flanges 19, 15 and 20 which can be readily reached so that in case the point of the blade breaks off such point can be ejected.

It will thus be observed that l. have produred an implement which will out along a plane which is curved and which will produce a cut along an increased area or surface as the depth of the cut is increased. Thead vantage of such arrangement in connection with the treatment of corns will be obvious. In addition the curvature of the blade permits of the use of different portions of the cutting edge for successive cutting operations. The action of an implement of this character upon a corn will be a paring one rather than a cutting one, and the chips will be discharged through the opening, 23. The cutting edge of the blade with its position predetermined in the manner above set forth, will be substantially parallel to the slot 23. The angularly extending portion 22 of the lobe 21 will serve as a guard for the knife edge in a well known manner.

In Fi 'ures 7, 8 and 9, I show a modified embodiment of my invention inwhich the holder is preferably formed from" a single blank which isbent intermediateof its longi-' tudinal edges: to provide the superposed portions or members 39 and 41 which are spaced apart for the desired or predetermined extent to provide the channel 42 therebetween and in which embodimentthe curvature of the channel an incident and results from the curvature of the holder. The blank from which the holder is formed is so arranged and channeled that, when doubled up as described, it provides on the member 41 the extension 43 which servesto afiix the blade 'holoer to the handle 45 and which then has its edge 46 arranged angularly so as to cause this member 41 to'taper or narrow to the point 44 at which point it has a cut away portion 44 and a lateral extension 47 with a downwardly extending flange portion 46 and the end portion 47, all for purposes that will shortly appear. I

As will be observed upon viewing Figure 7 of the drawings, the other of the superposed portions 34 is made muchshorter beginning at a point which corresponds more or less to that at whichthe portion 41 beginsto narrow, namely at the point 48. It will be observed that this portion 39 is attached to the member 41 along the back 49. While this member 39 tapers or narrows at an angle which is substantially that of the member 41, it is considerably wider thanthe superposed member 41 and is further provided with the channel or slot 50 extending in a direction substantially parallel to the angular free edges of both superposed portions which define their degree of taper. In this manner, that is by the slot 50, there is, therefore, provided an edge 51 which corresponds with and coacts with the edge 46 of the member 41' and an edge 52 which will be further hereinafter referred to, it being observed that the cutting edge 53 ofthe blade positioned that. wheninsertedin the channel it is postioned at a point intermediate the side i recess at the upper or outer'end of the holder,

which recess is delimited and defined by the portions 47, 54:, 47, 46 and 55. in other words, the holder formed in the manner thus described provides not only the curved chain nel 42 but also forms this, curved channel at its end into what is infact a recess.

The blade 56 is'somewhat similar in shape to that employed inthe embodiment described, except that instead of being irov'ided with the reduced extensionfie as in the earlier embodiment it is provided with the extension 56 within which is provided a longitudinally extending open slot 57. The narrowest or outermost end of the blade is received within the recess just as is the corresponding por tion of the blade in the embodiment in Figure 1 in the corresponding recess of that embodiment. The blade of the embodiment of Figures 7, 8 and9 is curved with the curvature of the channel and is moved. into the channel just as in the previous embodiment.

I show in connection with this embodiment a modified form of means for predetermining'the position of the blade and for holding it in such predetermined position. These m'eanscoinprise the slot 57 already described and a projection 58-punched up from or 0th ferwise associated with the member 41 which projection is of a Width to en age within the slot 57 and in the inward movement of the blade above referred to, the lobe or finger of the end 56 will be forced upwardl over the projection 58 and the finger 60 will snap into position in back thereof, thus loclc ing the blade in the predetermined position with the projection 58 received Within the slotor opening 57 and in order to increase the coaction between the parts 57 and 58, the projection 58 may be made of a width slightly greater than that of the slot 57 thereby obtaining additionally a gripping action between the side walls of the slot 57 and the member 58.

When it is desired-to remove the blade in this embodiment of the invention the finger 60 is flexed upwardly, which action will be permitted by the notch'Bl formed in the member 61 until the finger is above the level of the projection 58 and the blade 59 is then forced laterally angularly out of the chan nel 42 until it assumes its flat or normal posi tion shown in Figure 2 in connection with the first embodiment of the invention, and in Figure 8 of this embodiment. The blade can then be fully withdrawnas already described in the previous embodiment. It will be understood that the relative dimensions of the parts in this latter embodiment and the coaction of the blade with the holder are substantially the same as those in connection with the first embodiment.

In the embodiment of Figure 1, the removal of the blade is helped materially by the notch 25 in the holder and by a corresponding notch 3a in the blade.-

Having thus described my invention and illustrated its use, what I claim as new and desire to secure by Letters Patent is 1. In a device of the character described, in combination, a curved blade holder having a recess at one end adapted to receive one end of a blade and means at the other endadapted to engage with the opposite end of the blade, said last mentioned means including a recess ona superposed portion of the holder.

2. In a device of the character described, a blade holder having one of its sides inclined and soarranged that a blade can have its cut ting edge exposed along said inclined edge, and means for engaging opposite ends of the blade, said means including a depression in a superposed spaced portion of the holder.

3. In a device of the character described, in combination, a blade holder having a curved supporting surface and means intecral with said surface for holding a blade ith its cutting edge curved in conformity with the curvature of the surface, said means. comprising a member positioned in spaced superposed parallel relationship to said surface and presenting a lateral channel therebetween open to'one side and within which a blade can be moved, and means on said member adapted to receive the blade therein and srevent the movement of the blade laterally out of the channel.

l In a device of the character described, in combination, a blade holder comprising a longitudinally curved supporting surface into conformity with which a blade is to be flexed, and means integral with said surface for holding said blade with its cutting edge curved in conformity with the curvature of the surface, said means comprising a member overhanging and spaced from said surface, and shoulderson said member to prevent a lateral movement of the blade.

5. In a device of the character described, in combination, a blade holder having a curved supporting surface and means integral with said surface for holding a blade with its cutting edge curved in conformity with the curvature of the surface, said means comprising a member positioned in spaced superposed parallel relationship to said surface and presenting a lateral channel therebet'ween open to one side and within which a blade can be i a blade and means at the other end adapted to engage with the opposite end of the blade, said last mentioned means comprising a member superposed on and spaced from the holder, and means including a depression for preventing a lateral movement of the blade from below the member. o

7. In a device of the character described, in combination, a curved blade holder having a recess at one end adapted to receive one end of a blade and means at the other end adapted to engage with the opposite end of the blade, said last mentioned means comprising a member superposed on and spaced from the holder, and means for preventing a lateral movement of the blade from below the member, said preventing means comprising a recess 1n the lower surface of sa1d member.

8. In a: device of the character described,

in combination, a curved blade holder having portions defining a recess at one end adapted to receive one end of a blade and means at the other end adapted to engage with the 0pposite end of the blade, said means including a recess into which a portion of the blade ,is automatically moved as the blade is moved MARCUS B. BEHRMAN. 

